Igniting apparatus



C. E. PEARSON. IGNITING APPARATUS. APPLICATION FILED AUG. 2?,1917.

Patented June 20, 1922.

, I INVENTOR LY/TRL PEAR-SON.

ATTORNEY barrel) STATES CARL E. .PEARSON, 0F LANSING, MICHIGAN.

Iem'rmG' APPAR TUS.

matinee.

To all whom it my concem:

' Be it known that I, CARL E. PEARSON, a

citizen of the United States, residing at Lansing, county of Ingham, State of Michigan, have invented a certain new and useful Improvement in Igniting Apparatus,

and-exact description of the same, such'as" will enable others skilled in the art to which it pertains'to. make and use the same, reference' being had to the accompanyit'fgfdrawingi, which form a part of this specification.

y invention relates to igniting appara-' tus and an object of my improvements is to provide an improved apparatus for produc-' ing the spark for ignitingfthe charge in in ternal combustion engines, both in starting and at high speeds;

I securethis object in the. apparatus illus 'trated in the accompanying" drawings in .Which- I plan yiew, diagrammatic in Figure 1 is a character, showing an apparatus embodyondary coil.

having the pole-pieces (1E and d3 ing in invention;- I

Figure 2 is a detail plan-view of the armature and connecting parts;

c c is an electro-magnet having pole-pieces c and 0 a is a primary coil and b a sec These coils-are wound upon d is a rotating armature The armature d is adapted to rotate with its hearing' shaft 9, between the poles c and c of the magnet 0, its pole-pieces d and d being adapted to pass closely adjacent of the said pole-pieces as in ,the usual construction. 6 is an energizing coil wound upon the armature d. e and e are the leads through which the ends of the coils e are carried out from the magnet. These leads are joined respectively to the rings 6 and 0 e and e are brushes making contactwith the rings a and e".

f is a battery, or source of electrical current, having the binding posts f and f There -is a conductor wire 7 connected with the binding post f and with the brush 6 There is a conductor wire f leading from the binding post i to a switch is through the magnet c c.

I Specification of Letters l'ateiit.

which it may be connected to the brush 6. n 1s a conductor wire leading from the bindlng post, f to the switch '70 through which switch it maybe connected through the conductor a with the primary winding a upon themagnet c. The primary winding and declare the following to be a tullncleanw-a is ctflinu in the-conductora and connected with a make-and-break evice h. m 1s ainondnlctor connected with the cond'uctor nand with the make and-break de-' vice h on the opposite side of the gap to that at whichj the conductor a? is con-' nected. 2 1s a condenser connected across engine. As soon as the engine has attained a running speed the switch 70 is turned tothe position shownin full lines in which the battery 7 is connected through the coil 6 and the current flows steadily through said coil maintaining the magnetism of the armature d. The rotation- (1 changes the direction'and intensity of the magnetic fiux through the magnet c. This variation in the magnetic flux sets up a current in the primary coil a which current is broken at the proper 'time' relative to the rotation of the armature d by the make-andbreak device it. Thus causing a high potentialinduced current in the secondary b b. By the above construction the apparatus consisting of the parts 0 (1 acts as 'a dynamo to produce a In an ignition system for internal com- Patented June 20, 1922. a n cgg n mea August 27, i917. SerialNo. 188,363.,

of the armature spark at high speeds and as a sparking coil energizes in the usual way bustion engines, the combination of a dynawindings on the field magnet, a battery and mo havinga field magnet with a soft iron means for throwing said battery in circuit 10 core, anarmature with a soft iron core Withsaid make-and-break--device and the adapted to rotate between the poles of the windings in the field magnet, or in circuit field magnet, the field magnet being Wound with said energizing'coil. to constitute'a sparking coil, the armature 'In testimony whereof, I sign this speci core being wound with an energizing coil, fication.

a make-and-break device in circuit with I CARL E. PEARSON. 

